Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / CustomValidator.cs / 1305376 / CustomValidator.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System.ComponentModel; using System.Web; using System.Web.Util; ////// [ DefaultEvent("ServerValidate"), ToolboxData("<{0}:CustomValidator runat=\"server\" ErrorMessage=\"CustomValidator\">{0}:CustomValidator>") ] public class CustomValidator : BaseValidator { private static readonly object EventServerValidate= new object(); ///Allows custom code to perform /// validation on the client and/or server. ////// [ WebCategory("Behavior"), Themeable(false), DefaultValue(""), WebSysDescription(SR.CustomValidator_ClientValidationFunction) ] public string ClientValidationFunction { get { object o = ViewState["ClientValidationFunction"]; return((o == null) ? String.Empty : (string)o); } set { ViewState["ClientValidationFunction"] = value; } } [ WebCategory("Behavior"), Themeable(false), DefaultValue(false), WebSysDescription(SR.CustomValidator_ValidateEmptyText), ] public bool ValidateEmptyText { get { object o = ViewState["ValidateEmptyText"]; return((o == null) ? false : (bool)o); } set { ViewState["ValidateEmptyText"] = value; } } ///Gets and sets the custom client Javascript function used /// for validation. ////// [ WebSysDescription(SR.CustomValidator_ServerValidate) ] public event ServerValidateEventHandler ServerValidate { add { Events.AddHandler(EventServerValidate, value); } remove { Events.RemoveHandler(EventServerValidate, value); } } ///Represents the method that will handle the /// ///event of a /// . /// /// protected override void AddAttributesToRender(HtmlTextWriter writer) { base.AddAttributesToRender(writer); if (RenderUplevel) { string id = ClientID; HtmlTextWriter expandoAttributeWriter = (EnableLegacyRendering) ? writer : null; AddExpandoAttribute(expandoAttributeWriter, id, "evaluationfunction", "CustomValidatorEvaluateIsValid", false); if (ClientValidationFunction.Length > 0) { AddExpandoAttribute(expandoAttributeWriter, id, "clientvalidationfunction", ClientValidationFunction); if (ValidateEmptyText) { AddExpandoAttribute(expandoAttributeWriter, id, "validateemptytext", "true", false); } } } } ///Adds the properties of the ///control to the /// output stream for rendering on the client. /// /// protected override bool ControlPropertiesValid() { // Need to override the BaseValidator implementation, because for CustomValidator, it is fine // for the ControlToValidate to be blank. string controlToValidate = ControlToValidate; if (controlToValidate.Length > 0) { // Check that the property points to a valid control. Will throw and exception if not found CheckControlValidationProperty(controlToValidate, "ControlToValidate"); } return true; } ///Checks the properties of the control for valid values. ////// /// EvaluateIsValid method /// protected override bool EvaluateIsValid() { // If no control is specified, we always fire the event. If they have specified a control, we // only fire the event if the input is non-blank. string controlValue = String.Empty; string controlToValidate = ControlToValidate; if (controlToValidate.Length > 0) { controlValue = GetControlValidationValue(controlToValidate); Debug.Assert(controlValue != null, "Should have been caught be property check"); // If the text is empty, we return true. Whitespace is ignored for coordination wiht // RequiredFieldValidator. if ((controlValue == null || controlValue.Trim().Length == 0) && !ValidateEmptyText) { return true; } } return OnServerValidate(controlValue); } ////// protected virtual bool OnServerValidate(string value) { ServerValidateEventHandler handler = (ServerValidateEventHandler)Events[EventServerValidate]; ServerValidateEventArgs args = new ServerValidateEventArgs(value, true); if (handler != null) { handler(this, args); return args.IsValid; } else { return true; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //Raises the /// ///event for the . // Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System.ComponentModel; using System.Web; using System.Web.Util; ////// [ DefaultEvent("ServerValidate"), ToolboxData("<{0}:CustomValidator runat=\"server\" ErrorMessage=\"CustomValidator\">{0}:CustomValidator>") ] public class CustomValidator : BaseValidator { private static readonly object EventServerValidate= new object(); ///Allows custom code to perform /// validation on the client and/or server. ////// [ WebCategory("Behavior"), Themeable(false), DefaultValue(""), WebSysDescription(SR.CustomValidator_ClientValidationFunction) ] public string ClientValidationFunction { get { object o = ViewState["ClientValidationFunction"]; return((o == null) ? String.Empty : (string)o); } set { ViewState["ClientValidationFunction"] = value; } } [ WebCategory("Behavior"), Themeable(false), DefaultValue(false), WebSysDescription(SR.CustomValidator_ValidateEmptyText), ] public bool ValidateEmptyText { get { object o = ViewState["ValidateEmptyText"]; return((o == null) ? false : (bool)o); } set { ViewState["ValidateEmptyText"] = value; } } ///Gets and sets the custom client Javascript function used /// for validation. ////// [ WebSysDescription(SR.CustomValidator_ServerValidate) ] public event ServerValidateEventHandler ServerValidate { add { Events.AddHandler(EventServerValidate, value); } remove { Events.RemoveHandler(EventServerValidate, value); } } ///Represents the method that will handle the /// ///event of a /// . /// /// protected override void AddAttributesToRender(HtmlTextWriter writer) { base.AddAttributesToRender(writer); if (RenderUplevel) { string id = ClientID; HtmlTextWriter expandoAttributeWriter = (EnableLegacyRendering) ? writer : null; AddExpandoAttribute(expandoAttributeWriter, id, "evaluationfunction", "CustomValidatorEvaluateIsValid", false); if (ClientValidationFunction.Length > 0) { AddExpandoAttribute(expandoAttributeWriter, id, "clientvalidationfunction", ClientValidationFunction); if (ValidateEmptyText) { AddExpandoAttribute(expandoAttributeWriter, id, "validateemptytext", "true", false); } } } } ///Adds the properties of the ///control to the /// output stream for rendering on the client. /// /// protected override bool ControlPropertiesValid() { // Need to override the BaseValidator implementation, because for CustomValidator, it is fine // for the ControlToValidate to be blank. string controlToValidate = ControlToValidate; if (controlToValidate.Length > 0) { // Check that the property points to a valid control. Will throw and exception if not found CheckControlValidationProperty(controlToValidate, "ControlToValidate"); } return true; } ///Checks the properties of the control for valid values. ////// /// EvaluateIsValid method /// protected override bool EvaluateIsValid() { // If no control is specified, we always fire the event. If they have specified a control, we // only fire the event if the input is non-blank. string controlValue = String.Empty; string controlToValidate = ControlToValidate; if (controlToValidate.Length > 0) { controlValue = GetControlValidationValue(controlToValidate); Debug.Assert(controlValue != null, "Should have been caught be property check"); // If the text is empty, we return true. Whitespace is ignored for coordination wiht // RequiredFieldValidator. if ((controlValue == null || controlValue.Trim().Length == 0) && !ValidateEmptyText) { return true; } } return OnServerValidate(controlValue); } ////// protected virtual bool OnServerValidate(string value) { ServerValidateEventHandler handler = (ServerValidateEventHandler)Events[EventServerValidate]; ServerValidateEventArgs args = new ServerValidateEventArgs(value, true); if (handler != null) { handler(this, args); return args.IsValid; } else { return true; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.Raises the /// ///event for the .
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DynamicRendererThreadManager.cs
- ModifierKeysValueSerializer.cs
- DataGridViewCellCollection.cs
- PropertyEmitterBase.cs
- SqlGatherConsumedAliases.cs
- Encoder.cs
- WebPartMinimizeVerb.cs
- SqlParameterizer.cs
- DataAdapter.cs
- XhtmlTextWriter.cs
- WindowsClaimSet.cs
- SaveFileDialog.cs
- RedistVersionInfo.cs
- rsa.cs
- IOException.cs
- XmlRawWriter.cs
- KeyGesture.cs
- FixedSOMPageElement.cs
- HttpCacheVaryByContentEncodings.cs
- DataGridViewColumnConverter.cs
- ToolboxDataAttribute.cs
- DebugView.cs
- SqlAliaser.cs
- Size.cs
- DeleteHelper.cs
- ExpressionCopier.cs
- PrintPageEvent.cs
- ProgressPage.cs
- NavigationPropertyEmitter.cs
- RawStylusInputCustomData.cs
- Label.cs
- WeakReferenceEnumerator.cs
- PointAnimationBase.cs
- _ConnectOverlappedAsyncResult.cs
- XmlSerializerSection.cs
- AttachInfo.cs
- DataTableClearEvent.cs
- InputReferenceExpression.cs
- StructuredTypeInfo.cs
- SafeRightsManagementHandle.cs
- VirtualizedContainerService.cs
- PlatformCulture.cs
- DrawingBrush.cs
- EmptyCollection.cs
- BooleanStorage.cs
- ScrollViewer.cs
- OdbcConnectionString.cs
- ScheduleChanges.cs
- SafeHandles.cs
- MethodBuilderInstantiation.cs
- RSAPKCS1KeyExchangeFormatter.cs
- ComponentResourceManager.cs
- StateChangeEvent.cs
- sapiproxy.cs
- DataGridViewRowsRemovedEventArgs.cs
- SqlDataRecord.cs
- SetUserPreferenceRequest.cs
- PiiTraceSource.cs
- ValidatingReaderNodeData.cs
- PointF.cs
- DataGridItemEventArgs.cs
- DataError.cs
- QilInvoke.cs
- CdpEqualityComparer.cs
- ReceiveSecurityHeaderEntry.cs
- ToolZone.cs
- SAPIEngineTypes.cs
- ControlLocalizer.cs
- SocketPermission.cs
- DesignerDataParameter.cs
- ConstraintStruct.cs
- IndexedWhereQueryOperator.cs
- IncrementalCompileAnalyzer.cs
- DecimalAnimation.cs
- EntityClientCacheKey.cs
- Int32Animation.cs
- IndexingContentUnit.cs
- PartitionedStreamMerger.cs
- LabelAutomationPeer.cs
- Point4D.cs
- ToolBarButtonDesigner.cs
- ConnectionManagementSection.cs
- ScriptingJsonSerializationSection.cs
- ThrowOnMultipleAssignment.cs
- WebRequestModulesSection.cs
- VirtualPathProvider.cs
- HttpListener.cs
- LinkLabel.cs
- NativeMethods.cs
- GeometryModel3D.cs
- DataServiceClientException.cs
- GridLengthConverter.cs
- CollectionChange.cs
- HtmlTitle.cs
- XmlCompatibilityReader.cs
- SoapIncludeAttribute.cs
- returneventsaver.cs
- ButtonDesigner.cs
- LayoutEngine.cs
- HttpModuleCollection.cs